But on the other hand, the whole race of dolphins just looks vaguely elated, and surely that can’t track the collective personality of the species.
Consider this bit of Pliny the Elder’s Natural History:
XI. The creatures called porpoises have a resemblance to dolphins (at the same time they are distinguished from them by a certain gloomy air, as they lack the sportive nature of the dolphin), but in their snouts they have a close resemblance to the maleficence of dogfish.
Consider this bit of Pliny the Elder’s Natural History: